GB2120885B - Raising amplifier efficiency - Google Patents

Raising amplifier efficiency

Info

Publication number: GB2120885B
Authority: GB; United Kingdom
Prior art keywords: amplifier efficiency; raising amplifier; raising; efficiency; amplifier
Prior art date: 1982-04-01
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

GB08308733A

Other versions

GB2120885A (en

Inventor

Peter Garde

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Unisearch Ltd

Original Assignee

Unisearch Ltd

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1982-04-01

Filing date

1983-03-30

Publication date

1985-08-07

1983-03-30 Application filed by Unisearch Ltd filed Critical Unisearch Ltd

1983-12-07 Publication of GB2120885A publication Critical patent/GB2120885A/en

1985-08-07 Application granted granted Critical

1985-08-07 Publication of GB2120885B publication Critical patent/GB2120885B/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/217—Class D power amplifiers; Switching amplifiers
- H03F3/2171—Class D power amplifiers; Switching amplifiers with field-effect devices
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3223—Modifications of amplifiers to reduce non-linear distortion using feed-forward

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Physics & Mathematics (AREA)
Nonlinear Science (AREA)
Amplifiers (AREA)

GB08308733A 1982-04-01 1983-03-30 Raising amplifier efficiency Expired GB2120885B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
AU342382		1982-04-01

Publications (2)

Publication Number	Publication Date
GB2120885A GB2120885A (en)	1983-12-07
GB2120885B true GB2120885B (en)	1985-08-07

Family

ID=3693884

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB08308733A Expired GB2120885B (en)	1982-04-01	1983-03-30	Raising amplifier efficiency

Country Status (3)

Country	Link
US (1)	US4516080A (en)
JP (1)	JPS58182905A (en)
GB (1)	GB2120885B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2669199B2 (en) *	1991-06-20	1997-10-27	ヤマハ株式会社	Amplifier circuit and audio signal amplifier circuit
JP3132093B2 (en) *	1991-09-25	2001-02-05	ヤマハ株式会社	Power supply circuit
US5160896A (en) *	1992-02-18	1992-11-03	Harman International Industries, Incorporated	Class D amplifier
US6476674B2 (en)	2001-01-24	2002-11-05	Momentum Data Systems	Method and apparatus for error correction of amplifier
FR2873872B1 (en)	2004-07-30	2006-10-20	Avise Sarl E	AUDIO CLASS AD AMPLIFIER
WO2006111891A1 (en) *	2005-04-20	2006-10-26	Nxp B.V.	A power supply system.
EP1875604A2 (en) *	2005-04-20	2008-01-09	Nxp B.V.	A parallel arranged linear amplifier and dc-dc converter
US7602155B2 (en) *	2005-07-27	2009-10-13	Artesyn Technologies, Inc.	Power supply providing ultrafast modulation of output voltage
US7859336B2 (en) *	2007-03-13	2010-12-28	Astec International Limited	Power supply providing ultrafast modulation of output voltage
US7994761B2 (en)	2007-10-08	2011-08-09	Astec International Limited	Linear regulator with RF transistors and a bias adjustment circuit
US8482346B2 (en)	2010-06-14	2013-07-09	Harman International Industries, Incorporated	High efficiency balanced output amplifier system
US8497734B2 (en)	2010-06-14	2013-07-30	Harman International Industries, Incorporated	High efficiency audio amplifier system
CN102478873B (en) *	2010-11-25	2014-03-19	中兴通讯股份有限公司	Power supply modulator
US9742360B2 (en) *	2015-03-22	2017-08-22	Dsp Group Ltd.	Efficient smart wideband linear hybrid CMOS RF power amplifier

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA597731A (en) *	1955-07-25	1960-05-10	L. Jensen James	Voltage and current regulation
US3294981A (en) *	1962-08-15	1966-12-27	Bose Corp	Signal translation employing two-state techniques
US3399358A (en) *	1965-01-21	1968-08-27	Bell Telephone Labor Inc	Amplifier distortion control by switching
US4378530A (en) *	1979-07-04	1983-03-29	Unisearch Limited	High-efficiency low-distortion amplifier
SE420143B (en) *	1980-01-28	1981-09-14	Asea Ab	EFFEKTFORSTERKARKOPPLING

1983
- 1983-03-30 GB GB08308733A patent/GB2120885B/en not_active Expired
- 1983-03-30 US US06/480,365 patent/US4516080A/en not_active Expired - Fee Related
- 1983-03-31 JP JP58054098A patent/JPS58182905A/en active Pending

Also Published As

Publication number	Publication date
US4516080A (en)	1985-05-07
GB2120885A (en)	1983-12-07
JPS58182905A (en)	1983-10-26

Publication	Publication Date	Title
DE3460724D1 (en)	1986-10-23	Multistage amplifier
GB8408834D0 (en)	1984-05-16	Amplifier
GB8312985D0 (en)	1983-06-15	Amplifiers
GB2117990B (en)	1985-11-20	Feed-forward amplifier
GB8307121D0 (en)	1983-04-20	Amplifiers
GB8317423D0 (en)	1983-07-27	Current amplifiers
GB2120885B (en)	1985-08-07	Raising amplifier efficiency
GB2134737B (en)	1986-07-16	Amplifier
GB2082412B (en)	1984-07-11	Power amplifiers
GB2084418B (en)	1984-08-22	Power amplifier
DE3370261D1 (en)	1987-04-16	Amplifier
GB8308451D0 (en)	1983-05-05	Amplifier
DE3362619D1 (en)	1986-04-24	Operational amplifier
GB2070373B (en)	1984-11-14	Power amplifier
DE3473390D1 (en)	1988-09-15	Amplifiers
YU134983A (en)	1987-10-31	Comutation amplifier
JPS57176810A (en)	1982-10-30	Power amplifier
DE3475839D1 (en)	1989-02-02	Electrostatic-charge-differential amplification
YU44374B (en)	1990-06-30	Commutation amplifier
DE3360029D1 (en)	1985-01-31	Preamplifier
DE3464306D1 (en)	1987-07-23	Amplifier
GB8316975D0 (en)	1983-07-27	Power amplifier
DE3380759D1 (en)	1989-11-23	Distributed amplifier
GB8306720D0 (en)	1983-04-20	Amplifier
GB2127247B (en)	1986-03-05	Push-pull amplifier

Legal Events

Date	Code	Title	Description
1988-11-23	PCNP	Patent ceased through non-payment of renewal fee